# Service bulletin 21\-023\-15 REV\-B

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10148981
- Published by NHTSA: 2018\-11\-26
- Manufacturer's number: 21\-023\-15 REV\-B
- Manufacturer's date: 2015\-08\-21
- NHTSA component: POWER TRAIN

## NHTSA's summary

Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming of the Transmission Control Module \(TCM\) with the latest available software. A small number of customers may experience an erroneous Malfunction Indicator Lamp \(MIL\) Illumination. Upon further investigation, the technician may find a Diagnostic Trouble Code \(DTC\) stored in the TCM memory. 3.6L Engine \(Sales Code ERB\) with 845RE Transmission \(Sales Code DFL\) ? P1DCD \- TCM monitoring processor performance multiple clutches locked up. ? P1B13 \- Park\-By\-Wire unintended out of park position. ? P0734 \- Gear 4 Shift Incorrect Ratio. 3.0L Engine \(Sales Code EHD\) with 845RE Transmission \(Sales Code DFL\) ? P1DCD \- TCM monitoring processor performance multiple clutches locked up. ? P1B13 \- Park\-By\-Wire unintended out of park position. 3.6L Engine \(Sales Code ERB\) with 845RE Transmission \(Sales Code DFG\) ? Harsh 2\-1 downshift or bump at low speeds. ? P0734 \- Gear 4 Shift Incorrect Ratio.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10148981-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10148981-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline

## Trouble codes named

P0734, P1B13, P1DCD

## Vehicles listed

- 2015 CHRYSLER 300
- 2015 DODGE CHARGER

## Recalls for the same vehicles and component

- [2018219](/recalls/tc/2018219.md), 2018-05-01: Powertrain
- [18V281000](/recalls/nhtsa/18V281000.md), 2018-05-01: POWER TRAIN:DRIVELINE:DRIVESHAFT
- [2017081](/recalls/tc/2017081.md), 2017-02-15: Powertrain
- [17V097000](/recalls/nhtsa/17V097000.md), 2017-02-14: POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT

## Other bulletins for the same vehicles and component

- [S2621000003 REV.A](/bulletins/11030138.md), 2026-03-18, Service bulletin: POWER TRAIN. The vehicle will exhibit a service transmission/check engine warning indicator for the following transmission models: 845RE, 8HP45, 850RE, 8HP50, 8HP70, 8HP75, 8HP75\-PHEV, 8HP75\-LCV, 8HP90, 8HP95. Transmissions may exhibit the following diagnostic codes: P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.
- [2103014](/bulletins/10229964.md), 2023-01-17, Service bulletin: EQUIPMENT; POWER TRAIN. Transmission Quick Learn Procedure
- [S2203000003](/bulletins/10229485.md), 2023-01-09, Service bulletin: POWER TRAIN:DRIVELINE:DRIVESHAFT. Proper Front Driveshaft Universal Joint \(U\-joint\) Inspection Procedures For All Wheel Drive \(AWD\) Vehicles.
- [W56](/bulletins/10229316.md), 2023-01-09, Service bulletin: POWER TRAIN. Customer Satisfaction Notification W56 Reprogram Powertrain Control Module
- [9003704](/bulletins/10229255.md), 2023-01-09, Service bulletin: ENGINE AND ENGINE COOLING; POWER TRAIN. Transmission Oil Pan, Heater \(TMU\), Tube or O\-ring Applies to vehicles equipped with 8 speed transmissions only; if you have a leak that appears to be at the pan the use of proper leak detection is recommended. The fluid in the 8 speeds can be detected with a black light and there are aftermarket spray on leak detection materials to help ensure that the leak is properly diagnosed and not from another location such as cooler lines, heater tubes, or case porosity. Please note that the transmission pan gasket is available for many of the 8 speed applications FCA offers. Please review the available quick connect and transfer tube parts, as replacement of the TMU may not be required. If a TOC line connection is found to be the source, the quick connect may need replacement. If the leak source is coming from the connection of the TMU to the transmission, the transfer tube may need replacement. When parts are returned to the QEC the retaining clips \(snap ring\) for the quick disconnect fittings are missing. \(This leaves a question as to whether the clips were missing from the assembly plant, or the technician removed them in order to make line removal easier.\) Please return the clips with the transmission heater and note if they were not there to begin with. For any questions regarding transmission heater, contact FCA Redacted Content. If no response in 15 minutes, proceed with repair.
- [2103415](/bulletins/10229244.md), 2023-01-09, Service bulletin: POWER TRAIN. Electronic Shifter Operation This bulletin involves Inspecting and replacing the Electronic Shifter \(E\-shifter\) if required. Customer may experience the E\-shifter will not shift out of park or the customer may be able to turn the E\-shifter knob without the brakes being depressed. The shift indicator and cluster will show a flashing D and the cluster will display a message to put the shifter back to the park position. The Transmission will NOT shift out of park, when the brake pedal is not depressed. On further inspection the technician may find DTC P0928\-00 BTSI Control.
- [S1709000010](/bulletins/10229031.md), 2023-01-09, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Customer complaints may include abnormal engine noise, rough idle, lack of power, misfire. Upon investigation, it may be found that there is excessive camshaft lobe wear/lifter wear \(roller failure\) on one or more cam lobes and that camshaft/lifter replacement is necessary.
- [9003704](/bulletins/10224898.md), 2022-10-31, Service bulletin: POWER TRAIN; ENGINE AND ENGINE COOLING. Trans Oil Pan, Heater Tube or O\-ring, Heater Applies to vehicles equipped with 8 speed transmissions only; If you have a leak that appears to be at the pan the use of proper leak detection is recommended. The fluid in the 8 speeds can be detected with a black light and there are aftermarket spray on leak detection materials to help ensure that the leak is properly diagnosed and not from another location such as cooler lines, heater tubes, or case porosity. If you have a leak concern please note that the transmission pan gasket is available for many of the 8 speed applications FCA offers. See your parts specialist for the proper gasket for the repair.
- [1804716](/bulletins/10224667.md), 2022-10-24, Service bulletin: POWER TRAIN. Powertrain Diagnostic And System Enhancements
- [1804516](/bulletins/10224665.md), 2022-10-24, Service bulletin: POWER TRAIN. 6.4L Diagnostic And System Improvements

JSON: [/v1/bulletins/10148981](/v1/bulletins/10148981)

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